Marine valve with high sealing performance

Abstract

The utility model relates to the technical field of marine valves, in particular to a marine valve with high sealing performance, which comprises a valve body, a fixed pipeline is fixedly connected onto the surface of the valve body, a connecting pipeline is connected onto the surface of the fixed pipeline through a flange, and a valve rod is arranged on the surface of the valve body. A first flange plate is fixedly connected to the surface of the valve body, a second flange plate is fixedly connected to the surface of the connecting pipeline, a spring is fixedly connected to the surface of the first flange plate, and a guide ring is fixedly connected to the surface of the spring. After the first flange plate and the second flange plate are loosened, the spring enables the guide ring to slide towards the extrusion ring on the annular guide groove of the first flange plate through elastic force, and it is guaranteed that the extrusion ring always extrudes the sealing ring on the annular groove of the guide ring; therefore, the flange connection sealing performance of the fixed pipeline and the connecting pipeline is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of marine valves, in particular to a marine valve with strong sealing performance. Background Art

[0002] Marine valves are valves specially designed and manufactured for use in the marine industry. They play a key role in the ship's piping system and are used to control the flow of fluids (such as water, fuel, air, etc.) to ensure the normal operation and safety of the ship.

[0003] The pipes and connecting pipes on both sides of the existing marine valves are connected by flanges. However, the ship may shake violently during operation, causing the flange connection between the pipes and the connecting pipes to loosen, thereby reducing the sealing performance of the valve during use. Utility Model Content

[0004] The utility model aims to provide a marine valve with strong sealing performance, so as to solve the problem that the ship may shake violently during operation, causing the flange connection between the pipeline and the connecting pipe to loosen, thereby reducing the sealing performance of the valve during use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a marine valve with strong sealing performance: comprising a valve body, a fixed pipe is fixedly connected to the surface of the valve body, a connecting pipe is flange-connected to the surface of the fixed pipe, a valve stem is arranged on the surface of the valve body, a first flange is fixedly connected to the surface of the valve body, a second flange is fixedly connected to the surface of the connecting pipe, a spring is fixedly connected to the surface of the first flange, a guide ring is fixedly connected to the surface of the spring, a sealing ring is fixedly connected to the surface of the guide ring, a limiting ring is fixedly connected to the surface of the second flange, and an extrusion ring is fixedly connected to the surface of the limiting ring.

[0006] Preferably, a filtering mechanism is provided on the surface of the fixed pipe, the filtering mechanism includes a first filter screen, the first filter screen is fixedly installed on the inner surface of the fixed pipe, a filtering pipe is fixedly connected to the surface of the fixed pipe, a second filter screen is fixedly installed on the surface of the filtering pipe, and a butterfly valve is provided on the surface of the filtering pipe.

[0007] Preferably, an annular guide groove is provided on the surface of the first flange, the spring is fixedly connected to the annular guide groove of the first flange, the guide ring slides on the annular guide groove of the first flange, and the sealing ring slides on the annular guide groove of the first flange through the guide ring.

[0008] Preferably, the springs are provided in multiple groups and are evenly arranged in a ring shape on the first flange. An annular groove is provided on the surface of the guide ring, and the sealing ring is fixedly connected to the annular groove of the guide ring.

[0009] Preferably, the inner and outer diameters of the guide ring are the same as those of the limiting ring, the outer ring diameter of the limiting ring is larger than the extrusion ring, and the inner ring diameter is smaller than the extrusion ring, the extrusion ring extrude the sealing ring on the annular groove of the guide ring, and the limiting ring slides on the annular guide groove of the first flange.

[0010] Preferably, the filter pipe is in a "U" shape as a whole, and both ends of the filter pipe are connected to the interior of the fixed pipe.

[0011] Preferably, the first filter screen and the second filter screen are on the same horizontal line, and the second filter screen is located in the middle of the filter pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The marine valve allows the limiting ring sliding rod to move to the annular guide groove of the first flange through the second flange, and allows the guide ring to slide on the annular guide groove of the first flange. The guide ring will squeeze the spring to deform it, and the limiting ring will squeeze the sealing ring on the annular groove of the guide ring through the squeezing ring, thereby forming a seal between the first flange and the second flange. When the first flange and the second flange are loose, the spring will use elastic force to make the guide ring slide toward the squeezing ring on the annular guide groove of the first flange, ensuring that the squeezing ring always squeezes the sealing ring on the annular groove of the guide ring, thereby ensuring the sealing of the flange connection between the fixed pipeline and the connecting pipeline.

[0014] 2. The marine valve is installed with a filter pipe on the fixed pipe, so that the fixed pipe forms two passages. When the first filter is blocked and cannot be used, the butterfly valve is opened, and the fluid will all pass through the filter pipe, and the second filter will flow into the fixed pipe again, and the fluid will be filtered through the second filter, which improves the maneuverability of the valve body and avoids the situation that the entire valve body needs to be repaired and cannot be operated due to the blockage of the first filter on the fixed pipe, thereby ensuring the continuous operation of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view stereoscopic schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a side view, cutaway, and exploded perspective schematic diagram of the structure of the connection between the fixed pipe and the connecting pipe of the utility model;

[0017] Figure 3 For this utility model Figure 2A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 It is a side view, cutaway, and exploded perspective schematic diagram of the first flange structure of the utility model;

[0019] Figure 5 It is a front cross-sectional schematic diagram of the fixed pipeline structure of the utility model.

[0020] In the figure: 1. valve body; 11. fixed pipe; 12. connecting pipe; 13. valve stem; 2. first flange; 21. second flange; 22. spring; 23. guide ring; 24. sealing ring; 25. limit ring; 26. extrusion ring; 3. first filter; 31. filter pipe; 32. second filter; 33. butterfly valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 , an embodiment provided by the utility model:

[0023] A marine valve with strong sealing performance comprises a valve body 1, a fixed pipe 11 is fixedly connected to the surface of the valve body 1, a connecting pipe 12 is flange-connected to the surface of the fixed pipe 11, a valve stem 13 is arranged on the surface of the valve body 1, a first flange 2 is fixedly connected to the surface of the valve body 1, a second flange 21 is fixedly connected to the surface of the connecting pipe 12, a spring 22 is fixedly connected to the surface of the first flange 2, a guide ring 23 is fixedly connected to the surface of the spring 22, a sealing ring 24 is fixedly connected to the surface of the guide ring 23, a limiting ring 25 is fixedly connected to the surface of the second flange 21, and an extrusion ring 26 is fixedly connected to the surface of the limiting ring 25. The marine valve can still maintain a good sealing performance after the flange connection between the fixed pipe 11 and the connecting pipe 12 is loosened, thereby ensuring the sealing strength of the valve body 1 during use and reducing the phenomenon of water leakage and water seepage.

[0024] Furthermore, a filtering mechanism is provided on the surface of the fixed pipe 11, and the filtering mechanism includes a first filter screen 3, the first filter screen 3 is fixedly installed on the inner surface of the fixed pipe 11, a filtering pipe 31 is fixedly connected to the surface of the fixed pipe 11, a second filter screen 32 is fixedly installed on the surface of the filtering pipe 31, and a butterfly valve 33 is provided on the surface of the filtering pipe 31. The filtering mechanism adopts dual-channel filtration, and can use the secondary channel for temporary filtration after the main channel is blocked, thereby improving the maneuverability of the valve body 1, avoiding the situation where the entire valve body 1 needs to be repaired and cannot operate due to the blockage of the first filter screen 3 on the fixed pipe 11, and ensuring the continuous operation of the valve body 1.

[0025] Furthermore, an annular guide groove is opened on the surface of the first flange 2, the spring 22 is fixedly connected to the annular guide groove of the first flange 2, the guide ring 23 slides on the annular guide groove of the first flange 2, and the sealing ring 24 slides on the annular guide groove of the first flange 2 through the guide ring 23. The inner and outer ring diameters of the guide ring 23 are the same as the diameter of the annular guide groove of the first flange 2, and the elastic force of the spring 22 acts on the sealing ring 24 through the guide ring 23.

[0026] Furthermore, the springs 22 are provided in multiple groups and are evenly arranged in a ring shape on the first flange 2. An annular groove is provided on the surface of the guide ring 23. The sealing ring 24 is fixedly connected to the annular groove of the guide ring 23. The guide ring 23 will squeeze multiple groups of springs 22 on the annular guide groove of the first flange 2 at the same time, causing the springs 22 to deform.

[0027] Furthermore, the inner and outer diameters of the guide ring 23 are the same as those of the limiting ring 25. The outer ring diameter of the limiting ring 25 is larger than the extrusion ring 26, and the inner ring diameter is smaller than the extrusion ring 26. The extrusion ring 26 squeezes the sealing ring 24 on the annular groove of the guide ring 23, so that the sealing ring 24 is deformed on the annular groove of the guide ring 23. The limiting ring 25 slides on the annular guide groove of the first flange 2. During the sliding process, the limiting ring 25 will drive the guide ring 23 to slide on the annular guide groove of the first flange 2.

[0028] Furthermore, the filter pipe 31 is in a "U" shape as a whole, and both ends of the filter pipe 31 are connected to the interior of the fixed pipe 11. The filter pipe 31 forms two passages on the fixed pipe 11 for fluid flow, and the first filter net 3 and the second filter net 32 ​​filter the fluid in the two passages respectively.

[0029] Furthermore, the first filter screen 3 and the second filter screen 32 are on the same horizontal line, and the second filter screen 32 is in the middle position of the filter pipe 31. When the first filter screen 3 is blocked, the butterfly valve 33 opens on the filter pipe 31, and the fluid will all pass through the filter pipe 31. The second filter screen 32 flows into the fixed pipe 11 again, and the fluid will be filtered through the second filter screen 32, thereby ensuring the continuity of the operation of the fixed pipe 11.

[0030] Working principle: The fixed pipe 11 and the connecting pipe 12 are flange-connected through the first flange 2 and the second flange 21. The second flange 21 will make the limiting ring 25 slide onto the annular guide groove of the first flange 2, and make the guide ring 23 slide on the annular guide groove of the first flange 2. The guide ring 23 will squeeze the spring 22 to deform it. The limiting ring 25 will squeeze the sealing ring 24 onto the annular groove of the guide ring 23 through the squeezing ring 26, thereby forming a seal between the first flange 2 and the second flange 21. When the first flange 2 and the second flange 21 become loose, the spring 22 will use the elastic force to make the guide ring 23 slide toward the squeezing ring 26 on the annular guide groove of the first flange 2, ensuring that the squeezing ring 26 always squeezes the sealing ring 24 on the annular groove of the guide ring 23, thereby ensuring the sealing of the flange connection between the fixed pipe 11 and the connecting pipe 12.

[0031] A filter pipe 31 is installed on the fixed pipe 11, so that the fixed pipe 11 forms two passages. When the first filter screen 3 is blocked and cannot be used, the butterfly valve 33 is opened, and the fluid will all pass through the filter pipe 31, and the second filter screen 32 will flow into the fixed pipe 11 again, and the fluid will be filtered by the second filter screen 32, thereby improving the maneuverability of the valve body 1, avoiding the situation that the entire valve body 1 needs to be repaired and cannot be operated due to the blockage of the first filter screen 3 on the fixed pipe 11, and ensuring the continuous operation of the valve body 1.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A marine valve with strong sealing performance, characterized by: The invention comprises a valve body (1), a fixed pipe (11) is fixedly connected to the surface of the valve body (1), a connecting pipe (12) is flange-connected to the surface of the fixed pipe (11), a valve stem (13) is arranged on the surface of the valve body (1), a first flange (2) is fixedly connected to the surface of the valve body (1), a second flange (21) is fixedly connected to the surface of the connecting pipe (12), a spring (22) is fixedly connected to the surface of the first flange (2), a guide ring (23) is fixedly connected to the surface of the spring (22), a sealing ring (24) is fixedly connected to the surface of the guide ring (23), a limiting ring (25) is fixedly connected to the surface of the second flange (21), and an extrusion ring (26) is fixedly connected to the surface of the limiting ring (25).

2. A marine valve with strong sealing performance according to claim 1, characterized in that: A filtering mechanism is arranged on the surface of the fixed pipe (11), the filtering mechanism comprising a first filtering screen (3), the first filtering screen (3) being fixedly mounted on the inner surface of the fixed pipe (11), a filtering pipe (31) being fixedly connected to the surface of the fixed pipe (11), a second filtering screen (32) being fixedly mounted on the surface of the filtering pipe (31), and a butterfly valve (33) being arranged on the surface of the filtering pipe (31).

3. A marine valve with strong sealing performance according to claim 1, characterized in that: An annular guide groove is provided on the surface of the first flange (2), the spring (22) is fixedly connected to the annular guide groove of the first flange (2), the guide ring (23) slides on the annular guide groove of the first flange (2), and the sealing ring (24) slides on the annular guide groove of the first flange (2) through the guide ring (23).

4. A marine valve with strong sealing performance according to claim 3, characterized in that: The springs (22) are provided in multiple groups and are evenly arranged in an annular shape on the first flange (2). An annular groove is provided on the surface of the guide ring (23), and the sealing ring (24) is fixedly connected to the annular groove of the guide ring (23).

5. A marine valve with strong sealing performance according to claim 4, characterized in that: The inner and outer diameters of the guide ring (23) are the same as those of the limiting ring (25); the outer ring diameter of the limiting ring (25) is larger than that of the extrusion ring (26), and the inner ring diameter is smaller than that of the extrusion ring (26); the extrusion ring (26) extrude the sealing ring (24) on the annular groove of the guide ring (23), and the limiting ring (25) slides on the annular guide groove of the first flange (2).

6. A marine valve with strong sealing performance according to claim 2, characterized in that: The filtering pipe (31) is in a "U" shape as a whole, and both ends of the filtering pipe (31) are connected to the interior of the fixed pipe (11).

7. A marine valve with strong sealing performance according to claim 6, characterized in that: The first filter screen (3) and the second filter screen (32) are located on the same horizontal line, and the second filter screen (32) is located in the middle of the filter pipe (31).

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